<script>
var d = 7; //变量
switch(d){ //对哪个变量进行switch操作
case 1: //冒号,后无大括号
console.log('Monday');
break;
case 2:
console.log('Tuesday');
break;
case 3:
console.log('Wednesday');
break;
case 4:
console.log('Thursday');
break;
case 5:
console.log('Friday');
break;
case 6: //后无内容无break,则直接跳下步
case 7:
default : //默认
console.log("Enjoy weenkend !");
break;
}
</script>